data_stdin
_audit_creation_method 'critic2-4f1eba8'
_cell_length_a         4.9717000000
_cell_length_b         4.9717000000
_cell_length_c         6.9223000000
_cell_angle_alpha        90.0000
_cell_angle_beta        90.0000
_cell_angle_gamma        90.0000
_cell_volume           171.104033
_space_group_crystal_system tetragonal
_space_group_IT_number 92
_space_group_name_H-M_alt 'P4_12_12'
_space_group_name_Hall 'P 4abw 2nw'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-1/2-y,-1/2+x,-3/4+z'
  '-x,-y,-1/2+z'
  '-1/2+y,-1/2-x,-1/4+z'
  '-1/2+x,-1/2-y,-1/4-z'
  '-y,-x,-1/2-z'
  '-1/2-x,-1/2+y,-3/4-z'
  'y,x,-z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si     Si     0.30028000000000     0.30028000000000     0.00000000000000
O      O      0.23920000000000     0.10440000000000     0.17870000000000
